WO2021093061A1 - 键盘 - Google Patents

键盘 Download PDF

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Publication number
WO2021093061A1
WO2021093061A1 PCT/CN2019/123747 CN2019123747W WO2021093061A1 WO 2021093061 A1 WO2021093061 A1 WO 2021093061A1 CN 2019123747 W CN2019123747 W CN 2019123747W WO 2021093061 A1 WO2021093061 A1 WO 2021093061A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
circuit board
mounting seat
optical camera
keyboard
Prior art date
Application number
PCT/CN2019/123747
Other languages
English (en)
French (fr)
Inventor
黄祖金
Original Assignee
深圳市源隆光学科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳市源隆光学科技有限公司 filed Critical 深圳市源隆光学科技有限公司
Publication of WO2021093061A1 publication Critical patent/WO2021093061A1/zh

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
    • H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard

Definitions

  • This application relates to the technical field of input devices, in particular to a keyboard.
  • the optical switch keyboard is provided with multiple light emitters and multiple infrared receiving tubes, and an optical path arranged between each light emitter and each infrared receiving tube.
  • a button is provided on the optical path, and pressing the button can block the optical path or make the optical path conduct, thereby realizing the button function.
  • the existing light emitters and infrared receiving tubes are directly arranged on the button mounting seat, and the corresponding circuit board is directly arranged on the button mounting seat, and each button is provided with a light emitter and an infrared receiving tube.
  • the main purpose of this application is to provide a keyboard, which aims to simplify the keyboard structure and save costs.
  • the keyboard proposed in this application includes:
  • a circuit board mounting base connected with the button mounting base
  • the circuit board is arranged on the circuit board mounting seat
  • At least one light emitter arranged on the circuit board mounting seat and electrically connected to the circuit board;
  • At least one optical camera arranged on the circuit board mounting seat and electrically connected to the circuit board, the optical camera and the light emitter are arranged on the circuit board mounting seat at intervals;
  • a number of keys are arranged on the key mounting base, each of the keys can move up and down relative to the key mounting base to have an initial position and a pressing position, and the keys are located in the light coverage area of the light emitter, The light emitter is used to indicate the positions of a number of the keys.
  • the optical camera collects the bright spot position of the key.
  • the key mounting seat has a first surface and a second surface that are opposed to each other, the second surface is located in the light coverage area, and the key mounting seat is provided with a plurality of penetrating through the first surface and the second surface.
  • each of the keys is correspondingly installed in one of the through holes.
  • each of the keys includes a base and a pressing shaft that can move up and down relative to the base, the base is embedded in a through hole and is provided with a mounting hole, and the pressing shaft is at least partially inserted In the mounting hole, when the pressing shaft is pressed, the pressing shaft protrudes from the second surface and is located in the light coverage area.
  • the pressing shaft is provided with a reflective part, and when the pressing shaft is pressed, the reflective part reflects the light of the light emitter and is received by the optical camera.
  • the circuit board mounting seat is provided on the side of the key mounting seat, and the light emitter and the optical camera are both provided adjacent to the second surface, and the light covering area is formed on the first surface. Two surface.
  • one of the base and the pressing shaft is provided with a sliding block, and the other of the two is provided with a sliding groove, and the pressing shaft can be opposed to the sliding groove through the cooperation of the sliding block and the sliding groove.
  • the base moves up and down.
  • the light emitter includes a light source and a lens provided on a light-emitting surface of the light source, and the lens is used to convert the light emitted by the light source into a one-line light source.
  • the second surfaces are parallel and form the light coverage area.
  • the optical camera includes a camera sensor, and the camera sensor is used to collect a bright spot position of the pressing axis.
  • the optical camera further includes a filter provided on the camera sensor.
  • the optical camera and the light emitter are arranged on the same surface of the circuit board mounting seat at intervals.
  • the keyboard of this application includes a key mounting seat, a circuit board mounting seat, a circuit board, at least one light emitter, at least one optical camera, and a number of keys.
  • the light emitter and the optical camera are spaced apart from the circuit board mounting seat and are electrically connected to the circuit board.
  • the circuit board mounting seat is connected with the button mounting seat, the light transmitter and the optical camera are separately arranged with the button mounting seat, and there is no need to arrange the circuit board on the button mounting seat, which simplifies the overall structure.
  • a number of keys are provided on the key mounting base, and the keys can move up and down relative to the key mounting base to have an initial position and a pressing position. The keys are located in the light coverage area of the light emitter.
  • the light emitter is used to indicate the positions of the keys.
  • the optical camera collects the bright spot position of the key, thereby realizing the keyboard function. This reduces the number of light transmitters and eliminates the need for infrared receiver tubes, which greatly reduces the cost of the keyboard and improves the response efficiency.
  • FIG. 1 is a schematic diagram of a part of the structure of an embodiment of the keyboard of this application;
  • Fig. 2 is a schematic structural diagram of the keyboard in Fig. 1 from another perspective;
  • Fig. 3 is a schematic diagram of a part of the exploded structure of the keyboard in Fig. 2;
  • Fig. 4 is a schematic diagram of the enlarged structure at A in Fig. 3;
  • Figure 5 is a schematic diagram of the explosive structure of the key of the application.
  • FIG. 6 is a schematic diagram of the exploded structure of the button in FIG. 5 from another perspective.
  • Label name Label name 100 keyboard 40 Optical camera 10 Button mount 41 Camera sensor 10a Through hole 42 Filter 11 First surface 50 button 12 Second surface 51 Base 20 Circuit board mount 511 Chute twenty one First shell 51a Mounting holes twenty two Second shell 52 Press shaft 30 Light emitter 521 Slider 31 light source 60 Circuit board 32 lens To To To
  • the terms “connected”, “fixed”, etc. should be understood in a broad sense.
  • “fixed” can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two components or an interaction relationship between two components, unless specifically defined otherwise.
  • “fixed” can be a fixed connection, a detachable connection, or a whole; It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be an internal communication between two components or an interaction relationship between two components, unless specifically defined otherwise.
  • This application proposes a keyboard 100, which is mainly an optical switch keyboard.
  • the keyboard 100 includes:
  • the circuit board mounting base 20 is connected to the button mounting base 10;
  • the circuit board 60 is arranged on the circuit board mounting seat 20;
  • At least one light emitter 30 is arranged on the circuit board mounting seat 20 and is electrically connected to the circuit board 60;
  • At least one optical camera 40 is disposed on the circuit board mounting seat 20 and electrically connected to the circuit board 60, the optical camera 40 and the light emitter 30 are spaced apart on the circuit board mounting seat 20;
  • buttons 50 are arranged on the button mounting base 10, each of the buttons 50 can move up and down relative to the button mounting base 10 to have an initial position and a pressing position, and a number of the buttons 50 are located on the light emitter 30 In the light coverage area, the light emitter 30 is used to indicate the positions of a number of the buttons 50.
  • the optical camera 40 collects the position of the button 50 Highlight location.
  • the key mounting base 10 is mainly used to mount a plurality of keys 50, and the key mounting base 10 is rectangular. Of course, in other embodiments, it may also have other structures such as an arc shape.
  • the preparation material can be plastic.
  • the key mount 10 can also be made of metal material.
  • the circuit board mounting base 20 is mainly used to install the optical transmitter 30 and the optical camera 40.
  • the circuit board mounting base 20 is connected to the button mounting base 10.
  • the connection method can be a fixed connection or a detachable connection, such as a fixed connection such as glue or welding.
  • the method, or the detachable connection method such as screws, bolts, or buckles, is not specifically limited here.
  • the light emitter 30 is mainly used to emit light signals, and the light emitter 30 may be a laser or a light emitting LED (LED light, such as a single-color LED light, a two-color LED light, or an RGB three-color LED light).
  • LED light such as a single-color LED light, a two-color LED light, or an RGB three-color LED light.
  • the button 50 When each button 50 is in the pressed position, the button 50 is at least partially located in the light coverage area, the light irradiated on the button 50 is blocked and reflected, and the optical camera 40 collects the bright spot position of the button 50. It can be that when the button 50 is not pressed, each button 50 receives the light emitted by the light transmitter 30 and reflects it to the optical camera 40. The optical camera 40 collects the bright spots emitted by the buttons 50 in different positions.
  • the button 50 When a certain button 50 is pressed, , The button 50 is moved down to block the light path.
  • the optical camera 40 cannot capture the position of the bright spot at the button 50. By obtaining the bright spot position of the button 50 at this position, the position of the button 50 is recognized, thereby realizing the function of the button 50 ; Or when the button 50 is not pressed, the optical camera 40 can not capture the bright spot position, after the button 50 is pressed, the button 50 moves down, the button 50 reflects the light emitted by the light emitter 30, and the optical camera 40 collects the position of the button 50 The bright spot position, so as to realize the button 50 function.
  • the light emitter 30 and the optical camera 40 are arranged on the circuit board mounting seat 20 at intervals, and can be arranged on the same surface of the circuit board mounting seat 20 or different surfaces, or the circuit board mounting seat 20 is set as a separate body, and a part is used for
  • the optical transmitter 30 is installed, and the other part is used to install the optical camera 40, and the circuit board mounting seat 20 is arranged at different positions of the key mounting seat 10, and the electrical conduction of the circuit board mounting seat 20 is realized by wired or wireless means, both Within the scope of protection of this patent.
  • the optical camera 40 and the light emitter 30 are arranged on the same surface of the circuit board mounting seat 20 at intervals.
  • the method of identifying the position of the button 50 is: after the optical camera 40 collects the position of the bright spot of the button 50, it feeds back the position information of the bright spot to the microprocessor, and the microprocessor transmits the position information of the bright spot to the upper computer, and the upper computer receives
  • the position information of the bright spot is imaged and processed, and the position information of the button 50 collected by the optical camera 40 is mapped through the mapping relationship between the button position information on the button mounting base 10 and the button 50 collected by the optical camera 40, and then the position of the button 50 is identified.
  • the number of light emitters 30 and optical cameras 40 can be selected according to needs. In general, the number of light emitters 30 and optical cameras 40 is not greater than the number of buttons 50, and the number of light emitters 30 can be set to achieve illumination. For each button 50, the number of optical cameras 40 is set to be able to receive the reflected light of each button 50, and there is no specific limitation here. In the embodiment of the present application, two light emitters 30 are used, an optical camera 40 and two light emitters 30 are symmetrically arranged on both sides of the optical camera 40, which can achieve a better light coverage area, and the optical camera 40 can be better. Collect the location of the bright spot to realize the function of button 50.
  • the keyboard 100 of the present application includes a key mounting seat 10, a circuit board mounting seat 20, a circuit board 60, at least one light emitter 30, at least one optical camera 40, and a number of keys 50.
  • the light emitter 30 and the optical camera 40 are spaced apart from each other.
  • the circuit board mounting seat 20 is electrically connected to the circuit board 60, and the circuit board mounting seat 20 is connected to the button mounting seat 10, and the light emitter 30 and the optical camera 40 are separately arranged from the button mounting seat 10, and there is no need to install the button mounting seat 10.
  • the circuit board 60 is arranged on the upper part, which simplifies the overall structure.
  • a number of keys 50 are provided on the key mounting base 10.
  • the keys 50 can move up and down relative to the key mounting base 10 to have an initial position and a pressing position.
  • the keys 50 are located in the light coverage area of the light emitter 30, which is used for the light emitter 30.
  • the optical camera 40 collects the bright spot position of the button 50, thereby realizing the function of the keyboard 100, thus reducing the number of light emitters 30 and eliminating the need for infrared
  • the receiving tube greatly reduces the cost of the keyboard 100 and improves the response efficiency.
  • the key mounting base 10 is used to mount a number of keys 50.
  • the key mounting base 10 has a first surface 11 and a second surface 12 that are arranged oppositely. The second surface 12 is located in the light coverage area, the key mounting seat 10 is provided with a plurality of through holes 10a penetrating through the first surface 11 and the second surface 12, and each key 50 is correspondingly installed in In a through hole 10a, when a button 10a is in the pressing position, the button 50 at least partially protrudes from the second surface 12 and is located in the light coverage area, and the button 50 reflects The light emitted by the light emitter 30 reaches the optical camera 40, and the optical camera 40 collects the position of the bright spot of the button 50.
  • the first surface 11 and the second surface 12 are arranged in parallel, and when the button 50 is in the initial position, the light path between the light emitter 30 and the optical camera 40 is blocked, that is, the light emitted by the light emitter 30 is in the first position.
  • the two surfaces 12 form a light coverage area.
  • the first surface 11 can also be located in the light coverage area of the light emitter 30.
  • each button 50 is located in the light coverage area, and the button 50 reflects the light emitted by the light emitter 30.
  • the optical camera 40 collects the position of the bright spot.
  • the optical camera 40 cannot capture the position of the bright spot, and the function of the button 50 is realized. All are within the protection scope of this patent.
  • the button 50 can have various structures, such as a mechanical button or a common button.
  • Each button 50 includes a base 51 and is relative to all the buttons.
  • the base 51 can move up and down a pressing shaft 52.
  • the base 51 is embedded in a through hole 10a and is provided with a mounting hole 51a.
  • the pressing shaft 52 is at least partially inserted into the mounting hole 51a. When the pressing shaft 52 is pressed, the pressing shaft 52 protrudes from the second surface 12 and is located in the light coverage area.
  • a reset structure such as a spring or torsion spring, can be arranged between the pressing shaft 52 and the base 51.
  • the pressing shaft 52 When the pressing shaft 52 is subjected to an external force, it can pass through the mounting hole 51a and protrude from the second surface 12 to carry out the light emitted by the light emitter 30. reflection. When the external force disappears, the pressing shaft 52 can be automatically reset.
  • the pressing shaft 52 is provided with a reflective part (not shown), when the pressing shaft 52 is pressed When the shaft 52 is pressed, the light reflecting part reflects the light of the light emitter 30 and is received by the optical camera 40.
  • the light-reflecting part may be a flat surface or a concave surface facing the light emitter 30. Of course, in other embodiments, it may also have other shapes, which is not specifically limited.
  • the circuit board mounting base 20 is arranged on the side of the key mounting base 10, and the light emitter Both the optical camera 30 and the optical camera 40 are disposed adjacent to the second surface 12, and the light coverage area is formed on the second surface 12.
  • the second surface 12 is a surface close to the desktop, which is a non-appearance surface.
  • the light covering area is formed on the second surface 12. The light covering area is not easily affected by other obstacles and can more accurately realize the button 50 Features.
  • one of the base 51 and the pressing shaft 52 is provided with a slider 521, and the other of the two is provided with a sliding block 521.
  • the side surface of the base 51 is provided with a sliding block 521, and the corresponding position of the pressing shaft 52 is provided with a sliding groove 511.
  • the side surface of the pressing shaft 52 is provided with a slider 521, and the corresponding position of the base 51 is provided with a sliding groove 511.
  • the number of the sliding block 521 and the sliding groove 511 can be correspondingly set in multiples, which are all within the scope of protection of this patent. Inside.
  • the light emitter 30 includes a light source 31 and a lens 32 provided on the light-emitting surface of the light source 31.
  • the lens 32 is used to The light emitted by the light source 31 is transformed into a one-line light source, and the one-line light source is parallel to the second surface 12 and forms the light coverage area.
  • the light source 31 can be an infrared laser or an infrared light emitting LED or other light source, for example, an infrared laser larger than 50 mW is used.
  • the lens 32 is arranged on the light emitting surface of the light source 31, and converts the light emitted by the light source 31 into a line light source, so that the light reflection effect is good.
  • the lens 32 has a spectral band pass of around 800 nm.
  • the optical camera 40 includes a camera sensor 41, and the camera sensor 41 is used to collect the bright spot position of the pressing shaft 52.
  • the camera sensor 41 is a wide-angle camera, and a wide-angle camera greater than or equal to 120 degrees is selected, such as a 180-degree wide-angle camera.
  • the optical camera 40 further includes a filter 42 provided on the camera sensor 41.
  • the filter 42 is used to filter stray light, and only allows the reflected light to pass, and other light cannot pass.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Input From Keyboards Or The Like (AREA)

Abstract

本申请公开一种键盘，其中，键盘包括：按键安装座；电路板安装座，与所述按键安装座连接；电路板，设于电路板安装座；至少一光发射器，设于所述电路板安装座；至少一光学摄像头，设于所述电路板安装座，所述光学摄像头与所述光发射器间隔设于所述电路板安装座，光学摄像头与光发射器与电路板电连接；以及若干按键，设于所述按键安装座，每一所述按键相对于所述按键安装座可上下移动而具有初始位和按压位，若干所述按键位于所述光发射器的光覆盖区域内，所述光发射器用于指示若干所述按键的位置，当一所述按键位于所述初始位或按压位时，所述光学摄像头采集所述按键的亮点位置。

Description

键盘
本申请要求2019年11月12日申请的，申请号201911104023.6，名称为“键盘”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及输入设备技术领域，特别涉及一种键盘。
 背景技术
相关技术中光开关键盘设置有多个光发射器和多个红外接收管，以及设置在每个光发射器与每个红外接收管之间的光路。并且，光路上还设置有按键，按键按压，可阻断该光路或使得光路导通，从而实现按键功能。但是，现有的光发射器和红外接收管都是直接设置在按键安装座上，直接在按键安装座上设置对应的电路板，且每一个按键对应设置一个光发射器和一个红外接收管。
 技术问题
相关技术中光开关键盘的结构复杂。
 技术解决方案
本申请的主要目的是提供一种键盘，旨在简化键盘结构，节约成本。
为实现上述目的，本申请提出的键盘，包括：
按键安装座；
电路板安装座，与所述按键安装座连接；
电路板，设于所述电路板安装座；
至少一光发射器，设于所述电路板安装座，且与所述电路板电连接；
至少一光学摄像头，设于所述电路板安装座，且与所述电路板电连接，所述光学摄像头与所述光发射器间隔设于所述电路板安装座；以及
若干按键，设于所述按键安装座，每一所述按键相对于所述按键安装座可上下移动而具有初始位和按压位，若干所述按键位于所述光发射器的光覆盖区域内，所述光发射器用于指示若干所述按键的位置，当一所述按键位于所述初始位或按压位时，所述光学摄像头采集所述按键的亮点位置。
可选的，所述按键安装座具有相对设置的第一表面和第二表面，所述第二表面位于所述光覆盖区域内，所述按键安装座设有若干贯穿所述第一表面和所述第二表面的通孔，每一所述按键对应安装于一所述通孔内，当一所述按键位于所述按压位时，所述按键至少部分凸出于所述第二表面并位于所述光覆盖区域内，所述按键反射所述光发射器发出的光线至所述光学摄像头，所述光学摄像头采集所述按键的亮点位置。
可选的，每一所述按键包括底座和相对于所述底座可上下移动的按压轴，所述底座嵌设于一所述通孔内并开设有安装孔，所述按压轴至少部分插设于所述安装孔内，当按压所述按压轴时，所述按压轴凸出于所述第二表面并位于所述光覆盖区域内。
可选的，所述按压轴设有反光部，当按压所述按压轴时，所述反光部对所述光发射器的光进行反射并被所述光学摄像头接收。
可选的，所述电路板安装座设于所述按键安装座的侧面，且所述光发射器和所述光学摄像头均邻近所述第二表面设置，所述光覆盖区域形成于所述第二表面。
可选的，所述底座与所述按压轴两者之一设有滑块，两者之另一设有滑槽，所述按压轴通过所述滑块与所述滑槽的配合可相对于所述底座上下移动。
可选的，所述光发射器包括光源和设于所述光源的出光面的透镜，所述透镜用于将所述光源发出的光线转化为一字线光源，所述一字线光源与所述第二表面平行，并形成所述光覆盖区域。
可选的，所述光学摄像头包括摄像头传感器，所述摄像头传感器用于采集所述按压轴的亮点位置。
可选的，所述光学摄像头还包括设于所述摄像头传感器的滤光片。
可选的，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
 有益效果
本申请键盘包括按键安装座、电路板安装座、电路板、至少一光发射器、至少一光学摄像头和若干按键，通过将光发射器和光学摄像头间隔设于电路板安装座并与电路板电连接，且电路板安装座与按键安装座连接，将光发射器和光学摄像头与按键安装座分开设置，且无需在按键安装座上设置电路板，简化了整体结构。另外，若干按键设于按键安装座，按键相对于按键安装座可上下移动而具有初始位和按压位，若干按键位于光发射器的光覆盖区域内，光发射器用于指示若干按键的位置，当一按键位于初始位或按压位时，光学摄像头采集按键的亮点位置，从而实现键盘功能，如此减少了光发射器的数量，且无需采用红外接收管，大大降低键盘的成本，提高反应效率。
 附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图示出的结构获得其他的附图。
图1为本申请键盘一实施例的部分结构示意图；
图2为图1中键盘另一视角的结构示意图；
图3为图2中键盘的部分爆炸结构示意图；
图4为图3中A处的放大结构示意图；
图5为本申请按键的爆炸结构示意图；
图6为图5中按键另一视角的爆炸结构示意图。
附图标号说明：
标号 名称 标号 名称
100 键盘 40 光学摄像头
10 按键安装座 41 摄像头传感器
10a 通孔 42 滤光片
11 第一表面 50 按键
12 第二表面 51 底座
20 电路板安装座 511 滑槽
21 第一壳体 51a 安装孔
22 第二壳体 52 按压轴
30 光发射器 521 滑块
31 光源 60 电路板
32 透镜    
本发明的实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
需要说明，本申请实施例中所有方向性指示（诸如上、下、左、右、前、后……）仅用于解释在某一特定姿态（如附图所示）下各部件之间的相对位置关系、运动情况等，如果该特定姿态发生改变时，则该方向性指示也相应地随之改变。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系，除非另有明确的限定。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
另外，在本申请中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。另外，各个实施例之间的技术方案可以相互结合，但是必须是以本领域普通技术人员能够实现为基础，当技术方案的结合出现相互矛盾或无法实现时应当认为这种技术方案的结合不存在，也不在本申请要求的保护范围之内。
本申请提出一种键盘100，该键盘100主要为光开关键盘。
参见图1和图2，在本申请实施例中，该键盘100包括：
按键安装座10；
电路板安装座20，与所述按键安装座10连接；
电路板60，设于所述电路板安装座20；
至少一光发射器30，设于所述电路板安装座20，且与所述电路板60电连接；
至少一光学摄像头40，设于所述电路板安装座20，且与所述电路板60电连接，所述光学摄像头40与所述光发射器30间隔设于所述电路板安装座20；以及
若干按键50，设于所述按键安装座10，每一所述按键50相对于所述按键安装座10可上下移动而具有初始位和按压位，若干所述按键50位于所述光发射器30的光覆盖区域内，所述光发射器30用于指示若干所述按键50的位置，当一所述按键50位于所述初始位或按压位时，所述光学摄像头40采集所述按键50的亮点位置。
本申请中，按键安装座10主要用来安装若干按键50，按键安装座10呈长方形，当然，于其他实施例中，也可以是圆弧形等其他结构。其制备材质可以是塑料。例如：聚碳酸酯塑料或者聚苯乙烯塑料等。当然，为使得键盘具有防暴，防尘，防水的功能，按键安装座10也可采用金属材质来制备。
电路板安装座20主要用于安装光发射器30和光学摄像头40，电路板安装座20与按键安装座10连接，该连接方式可以是固定连接或者可拆卸连接，如胶粘或焊接等固定连接方式，或者螺钉或螺栓或卡扣等可拆卸连接方式，在此不作具体限制。
而光发射器30主要用于发射光信号，光发射器30可为激光或发光LED（LED 灯，如单色LED 灯、双色LED 灯、RGB 三色LED 灯）等。每一按键50处于按压位时，按键50至少部分位于光覆盖区域内，照射到按键50上的光线被阻挡而反射，光学摄像头40采集按键50的亮点位置。可以是在按键50未按压时，每一个按键50接收光发射器30发射的光线并反射到光学摄像头40，光学摄像头40采集到不同位置的按键50发出的亮点位置，当某一按键50按压后，按键50下移，将光路阻断，光学摄像头40采集不到该按键50处的亮点位置，通过获取该位置处的按键50的亮点位置，识别按下按键50的位置，从而实现按键50功能；或者按键50未按压时，光学摄像头40采集不到亮点位置，按键50按压后，按键50下移，按键50将光发射器30发射过来的光线进行反射，光学摄像头40采集到该按键50的亮点位置，从而实现按键50功能。
光发射器30和光学摄像头40间隔设于电路板安装座20，可以是设于电路板安装座20相同的表面，或者不同的表面，或者将电路板安装座20设置为分体，一部分用于安装光发射器30，另一部分用于安装光学摄像头40，并将电路板安装座20设于按键安装座10的不同位置，通过有线或者无线方式实现电路板安装座20的电性导通，均在本专利的保护范围之内。
进一步的，为节省成本，简化整体结构，将光学摄像头40与光发射器30间隔设于电路板安装座20的同一表面。
其中，识别按下按键50的位置的方法为：光学摄像头40采集到按键50的亮点位置后，将亮点位置信息反馈给微处理器，微处理器将亮点位置信息传输给上位机，上位机接收亮点位置信息并进行图像处理，通过系统内部保存的按键安装座10上的按键位置信息与光学摄像头40采集的按键50的位置信息的映射关系，继而识别按下按键50的位置。
光发射器30和光学摄像头40的数量可根据需要进行选择，总体而言，光发射器30和光学摄像头40的数量不大于按键50的数量，光发射器30的设置个数以能实现照射到每个按键50，光学摄像头40的设置个数以能实现接收到每个按键50的反射光即可，在此不作具体限制。本申请实施例中，采用两个光发射器30，一个光学摄像头40两个光发射器30对称设于光学摄像头40的两侧，能够实现较好的光覆盖区域，且光学摄像头40能更好地采集亮点位置，实现按键50功能。
本申请键盘100包括按键安装座10、电路板安装座20、电路板60、至少一光发射器30、至少一光学摄像头40和若干按键50，通过将光发射器30和光学摄像头40间隔设于电路板安装座20并与电路板60电连接，且电路板安装座20与按键安装座10连接，将光发射器30和光学摄像头40与按键安装座10分开设置，且无需在按键安装座10上设置电路板60，简化了整体结构。另外，若干按键50设于按键安装座10，按键50相对于按键安装座10可上下移动而具有初始位和按压位，若干按键50位于光发射器30的光覆盖区域内，光发射器30用于指示若干按键50的位置，当一按键50位于初始位或按压位时，光学摄像头40采集按键50的亮点位置，从而实现键盘100功能，如此减少了光发射器30的数量，且无需采用红外接收管，大大降低键盘100的成本，提高反应效率。
进一步的，按键安装座10用于安装若干按键50，为了更好的实现键盘100的功能，保持整体美观性，所述按键安装座10具有相对设置的第一表面11和第二表面12，所述第二表面12位于所述光覆盖区域内，所述按键安装座10设有若干贯穿所述第一表面11和所述第二表面12的通孔10a，每一所述按键50对应安装于一所述通孔10a内，当一所述按键10a位于所述按压位时，所述按键50至少部分凸出于所述第二表面12并位于所述光覆盖区域内，所述按键50反射所述光发射器30发出的光线至所述光学摄像头40，所述光学摄像头40采集所述按键50的亮点位置。
本申请实施例中，第一表面11和第二表面12平行设置，按键50处于初始位时，光发射器30与光学摄像头40之间的光路阻断，即光发射器30发出的光线在第二表面12形成光覆盖区域，当任一按键50处于初始位时，按键50未被按压，光学摄像头40采集不到亮点位置。当按键50处于按压位时，按键50对接收到的光线进行发射，光学摄像头40采集到亮点位置，实现按键50的功能。
当然，也可将第一表面11位于光发射器30的光覆盖区域内，当一按键10a位于初始位时，每一按键50均位于光覆盖区域内，按键50反射光发射器30发出的光线至光学摄像头40，光学摄像头40采集到亮点位置。当一按键10a位于按压位时，光学摄像头40采集不到亮点位置，实现按键50的功能。均在本专利的保护范围之内。
按键50的结构可以有多种，如机械按键或者普通按键，本申请中，为了更好实现按键50的功能，请参见图5和图6，每一所述按键50包括底座51和相对于所述底座51可上下移动的按压轴52，所述底座51嵌设于一所述通孔10a内并开设有安装孔51a，所述按压轴52至少部分插设于所述安装孔51a内，当按压所述按压轴52时，所述按压轴52凸出于所述第二表面12并位于所述光覆盖区域内。按压轴52与底座51之间可设置复位结构，如弹簧或扭簧，当按压轴52受到外力作用时，能穿过安装孔51a并凸出第二表面12对光发射器30发出的光线进行反射。当外力消失时，按压轴52可自动复位。
进一步的，为了更好地对光发射器30发出的光线进行反射，使得反射的光线更集中地被光学摄像头40接收，所述按压轴52设有反光部（未图示），当按压所述按压轴52时，所述反光部对所述光发射器30的光进行反射并被所述光学摄像头40接收。反光部可以为正对光发射器30的平面或凹形面，当然，于其他实施例中，还可以是其他形状，对此不作具体限制。
参见图3和图4，为了不影响按键安装座10的正常使用，且保证整体结构更加紧凑，将所述电路板安装座20设于所述按键安装座10的侧面，且所述光发射器30和所述光学摄像头40均邻近所述第二表面12设置，所述光覆盖区域形成于所述第二表面12。在使用时，第二表面12为靠近桌面的表面，为非外观面，将光覆盖区域形成于第二表面12，光覆盖区域不容易受到其他障碍物的影响，能够更准确地实现按键50的功能。
进一步的，为保证按压轴52与底座51之间滑动更顺畅，参见图5和图6，所述底座51与所述按压轴52两者之一设有滑块521，两者之另一设有滑槽511，所述按压轴52通过所述滑块521与所述滑槽511的配合可相对于所述底座51上下移动。一实施例中，底座51的侧面设有滑块521，按压轴52的对应位置设有滑槽511。另一实施例中，按压轴52的侧面设有滑块521，底座51的对应位置设有滑槽511，滑块521和滑槽511的数量可对应设置多个，均在本专利的保护范围内。
为了保证光发射器30将第二表面12照亮，参见图4，所述光发射器30包括光源31和设于所述光源31的出光面的透镜32，所述透镜32用于将所述光源31发出的光线转化为一字线光源，所述一字线光源与所述第二表面12平行，并形成所述光覆盖区域。光源31可以为红外激光或红外发光LED等发光源，如采用大于50mW的红外激光。透镜32设于光源31的出光面，将光源31发出的光线转化为一字线光源，使得光线反射效果好。透镜32为800nm左右光谱带通。
为了更准确的捕捉到每个按键50的反射点，参见图4，所述光学摄像头40包括摄像头传感器41，所述摄像头传感器41用于采集所述按压轴52的亮点位置。摄像头传感器41为大广角摄像头，选择大于等于120度的广角摄像头，如180度广角摄像头等。
进一步的，参见图4，所述光学摄像头40还包括设于所述摄像头传感器41的滤光片42。滤光片42用于过滤杂光，只让反射的光线通过，其他光线不能通过。

Claims (20)

  1. 一种键盘，其中，包括：
    按键安装座；
    电路板安装座，与所述按键安装座连接；
    电路板，设于所述电路板安装座；
    至少一光发射器，设于所述电路板安装座，且与所述电路板电连接；
    至少一光学摄像头，设于所述电路板安装座，且与所述电路板电连接，所述光学摄像头与所述光发射器间隔设于所述电路板安装座；以及
    若干按键，设于所述按键安装座，每一所述按键相对于所述按键安装座可上下移动而具有初始位和按压位，若干所述按键位于所述光发射器的光覆盖区域内，所述光发射器用于指示若干所述按键的位置，当一所述按键位于所述初始位或按压位时，所述光学摄像头采集所述按键的亮点位置。
  2. 如权利要求1所述的键盘，其中，所述按键安装座具有相对设置的第一表面和第二表面，所述第二表面位于所述光覆盖区域内，所述按键安装座设有若干贯穿所述第一表面和所述第二表面的通孔，每一所述按键对应安装于一所述通孔内，当一所述按键位于所述按压位时，所述按键至少部分凸出于所述第二表面并位于所述光覆盖区域内，所述按键反射所述光发射器发出的光线至所述光学摄像头，所述光学摄像头采集所述按键的亮点位置。
  3. 如权利要求2所述的键盘，其中，每一所述按键包括底座和相对于所述底座可上下移动的按压轴，所述底座嵌设于一所述通孔内并开设有安装孔，所述按压轴至少部分插设于所述安装孔内，当按压所述按压轴时，所述按压轴凸出于所述第二表面并位于所述光覆盖区域内。
  4. 如权利要求3所述的键盘，其中，所述按压轴设有反光部，当按压所述按压轴时，所述反光部对所述光发射器的光进行反射并被所述光学摄像头接收。
  5. 如权利要求4所述的键盘，其中，所述反光部为正对所述光发射器的平面或凹形面。
  6. 如权利要求3所述的键盘，其中，所述电路板安装座设于所述按键安装座的侧面，且所述光发射器和所述光学摄像头均邻近所述第二表面设置，所述光覆盖区域形成于所述第二表面。
  7. 如权利要求3所述的键盘，其中，所述底座与所述按压轴两者之一设有滑块，两者之另一设有滑槽，所述按压轴通过所述滑块与所述滑槽的配合可相对于所述底座上下移动。
  8. 如权利要求3所述的键盘，其中，所述光发射器包括光源和设于所述光源的出光面的透镜，所述透镜用于将所述光源发出的光线转化为一字线光源，所述一字线光源与所述第二表面平行，并形成所述光覆盖区域。
  9. 如权利要求3所述的键盘，其中，所述光学摄像头包括摄像头传感器，所述摄像头传感器用于采集所述按压轴的亮点位置。
  10. 如权利要求9所述的键盘，其中，所述光学摄像头还包括设于所述摄像头传感器的滤光片。
  11. 如权利要求1所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  12. 如权利要求2所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  13. 如权利要求3所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  14. 如权利要求4所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  15. 如权利要求5所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  16. 如权利要求5所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  17. 如权利要求6所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  18. 如权利要求7所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  19. 如权利要求8所述的键盘，其中，所述光学摄像头与所述光发射器间隔设于所述电路板安装座的同一表面。
  20. 一种键盘，其中，包括：
    按键安装座；
    电路板安装座，与所述按键安装座连接；
    电路板，设于所述电路板安装座；
    至少一光发射器，设于所述电路板安装座，且与所述电路板电连接；
    至少一光学摄像头，设于所述电路板安装座，且与所述电路板电连接，所述光学摄像头与所述光发射器间隔设于所述电路板安装座；以及
    若干按键，设于所述按键安装座，每一所述按键相对于所述按键安装座可上下移动而具有初始位和按压位，若干所述按键位于所述光发射器的光覆盖区域内，所述光发射器用于指示若干所述按键的位置，当一所述按键位于所述初始位或按压位时，所述光学摄像头采集所述按键的亮点位置；
    所述按键安装座具有相对设置的第一表面和第二表面，所述第二表面位于所述光覆盖区域内，所述按键安装座设有若干贯穿所述第一表面和所述第二表面的通孔，每一所述按键对应安装于一所述通孔内，当一所述按键位于所述按压位时，所述按键至少部分凸出于所述第二表面并位于所述光覆盖区域内，所述按键反射所述光发射器发出的光线至所述光学摄像头，所述光学摄像头采集所述按键的亮点位置；
    每一所述按键包括底座和相对于所述底座可上下移动的按压轴，所述底座嵌设于一所述通孔内并开设有安装孔，所述按压轴至少部分插设于所述安装孔内，当按压所述按压轴时，所述按压轴凸出于所述第二表面并位于所述光覆盖区域内；
    所述光发射器包括光源和设于所述光源的出光面的透镜，所述透镜用于将所述光源发出的光线转化为一字线光源，所述一字线光源与所述第二表面平行，并形成所述光覆盖区域；
    所述光学摄像头包括摄像头传感器，所述摄像头传感器用于采集所述按压轴的亮点位置；
    所述光学摄像头还包括设于所述摄像头传感器的滤光片。
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CN102520805A (zh) * 2011-12-24 2012-06-27 华南理工大学 基于非光投影的输入方法和键盘
CN202404532U (zh) * 2011-12-24 2012-08-29 华南理工大学 基于非光投影的输入键盘
CN205485943U (zh) * 2016-03-03 2016-08-17 东莞市铭冠电子科技有限公司 一种发光键盘
CN206162471U (zh) * 2016-07-08 2017-05-10 广东海洋大学 虚拟键盘装置
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